CVE-2026-73220: CVAT audio annotation guide XSS via unsanitized Markdown

CVE-2026-73220 · Severity: info · Published 2026-08-20

CVAT is an open-source tool for annotating video and image datasets used in computer vision projects. The audio annotation feature allows users to create guides in Markdown format; however, malicious JavaScript code embedded in these guides is not sanitized before display. An attacker with guide-creation privileges can inject code that executes in the browsers of other users viewing the guide, potentially allowing them to perform unauthorized actions on behalf of those users.

Technologies: CVAT.ai CVAT. Vendors: CVAT.ai.

Quick answers

Is CVE-2026-73220 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-73220 being exploited in the wild.
How severe is CVE-2026-73220?
Informational severity, published 20 August 2026.
Which products and versions are affected?
CVAT.ai CVAT 2.68.0 through 2.69.x.
Is there a fix for CVE-2026-73220?
A patch was published on 2026-07-14: Fixed in version 2.70.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-73220 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-73220?
Check whether you run CVAT.ai CVAT at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This is a stored cross-site scripting (XSS) vulnerability in the audio-task annotation guide renderer located in cvat-ui/src/audio/components/annotation-page/audio-workspace/top-bar/audio-right-group.tsx. The vulnerable component passes user-supplied Markdown guide content to MDEditor without applying the rehype-sanitize plugin, which is responsible for removing malicious HTML and JavaScript. An authenticated user with permissions to create or edit annotation guides can store malicious JavaScript code that executes when any other user opens the guide, allowing arbitrary CVAT API requests to be made with the victim's session privileges. The vulnerability affects versions 2.68.0 through 2.69.x and is resolved in version 2.70.0.

Affected products

  • CVAT AI CVAT 2.68.0 through 2.69.x

Timeline

  • 2026-08-20: disclosed
  • 2026-07-14: patched: Fixed in version 2.70.0

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.